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* glscopeclient                                                                                                        *
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* Copyright (c) 2012-2022 Andrew D. Zonenberg                                                                          *
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/**
	@file
	@author Katharina B.
	@brief  Stores and manages preference values
 */

#ifndef PreferenceManager_h
#define PreferenceManager_h

#include <map>
#include <string>
#include "PreferenceTree.h"
#include <imgui.h>

class PreferenceManager
{
public:
    PreferenceManager()
        : m_treeRoot{ "" }
    {
        DeterminePath();
        InitializeDefaults();
        LoadPreferences();
    }

	~PreferenceManager()
	{
		SavePreferences();
	}

public:
    // Disallow copy
    PreferenceManager(const PreferenceManager&) = delete;
    PreferenceManager(PreferenceManager&&) = default;

    PreferenceManager& operator=(const PreferenceManager&) = delete;
    PreferenceManager& operator=(PreferenceManager&&) = default;

public:
    void SavePreferences();
    PreferenceCategory& AllPreferences();

    std::string GetConfigDirectory()
    { return m_configDir; }

    // Value retrieval methods
    int64_t GetInt(const std::string& path) const;
    int64_t GetEnumRaw(const std::string& path) const;
    const std::string& GetString(const std::string& path) const;
    double GetReal(const std::string& path) const;
    bool GetBool(const std::string& path) const;
    ImU32 GetColor(const std::string& path) const;
    FontDescription GetFont(const std::string& path) const;

    template< typename E >
    E GetEnum(const std::string& path) const
    {
        return this->GetPreference(path).GetEnum<E>();
    }

private:
    // Internal helpers
    void DeterminePath();
    void InitializeDefaults();
    void LoadPreferences();
    bool HasPreferenceFile() const;
    const Preference& GetPreference(const std::string& path) const;

private:
    PreferenceCategory m_treeRoot;
    std::string m_filePath;
    std::string m_configDir;
};

#endif // PreferenceManager_h
